53 entries under questionable topic. ×

8
unclear(adjective, open, uncertain, definite, doubtful)
6
borderline(adjective, open, uncertain, definite, doubtful)
6
equivocal(adjective, open, uncertain, definite, doubtful)
6
erratic(adjective, doubtful, vague, hesitant, dubious)
6
inconstant(adjective, doubtful, vague, hesitant, unsure)
6
indeterminate(adjective, uncertain, doubtful, unsettled, vague)
5
iffy(adjective, open, uncertain, definite, doubtful)
4
unstable(adjective, weak, uncertain, nervous, doubtful)
4
ambiguous(adjective, open, uncertain, doubtful, unsettled)
4
insecure(adjective, open, uncertain, nervous, doubtful)
4
unfixed(adjective, uncertain, doubtful, vague, hesitant)
3
unpredictable(adjective, uncertain, doubtful, vague, hesitant)
3
unreliable(adjective, uncertain, nervous, doubtful, vague)
3
up in the air(expression, adjective, idiom, open, certain)
2
unconfirmed(adjective, doubtful, unsettled, vague, hesitant)
2
untrustworthy(adjective, uncertain, nervous, doubtful, hesitant)
2
up for grabs(expression, idiom, uncertain, doubtful, vague)
2
variable(adjective, uncertain, doubtful, vague, hesitant)
1
chancy(uncertain, doubtful, vague, dubious, risky)
1
conjectural(doubtful, unsettled, vague, hesitant, indefinite)
11 years ago|13k views|share |citing 
APASmart Define. (2015). undecided thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/undecided/thesaurus/synonyms
ChicagoSmart Define. 2015. "undecided thesaurus" https://smartdefine.org/undecided/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, undecided thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/undecided/thesaurus/synonyms>.
MLASmart Define. "undecided thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/undecided/thesaurus/synonyms>